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        "核心概念：镜像分层（UnionFS）、容器生命周期\n",
        "常用命令：镜像构建（Dockerfile）、容器启停与挂载\n",
        "面试重点：\n",
        "容器与虚拟机的本质区别\n",
        "Docker 网络模式（bridge/host/overlay）对比\n",
        "如何优化 Docker 镜像体积\n",
        "实战场景：多阶段构建 Java 应用镜像"
      ]
    }
  ],
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